function [lmin,lmax,n] = split(line)
%
% [lmin,lmax,n] = split(line)
%
% line = input vector of character variable, usually the line name
%
% lmin	= vector of the indicies of the min.trace in each line
% lmax = vector of the indicies of the max.trace in each line
% n 	= number of lines
%  
% for example, if line = [aa aa aa bb bb cc cc cc], then
% lmin = [1 4 6], lmax = [3 5 8], n=3
%
% T. N. BISHOP,  NOVEMBER 1993,  CPTC CANADA
%   
% SEE ALSO SEIS2WELL, LINEWELLTIE, PLOTSEISWELL
%  
% NOTE: This SOFTWARE may be used by any individual or corporation for any purpose
% with the exception of re-selling or re-distributing the SOFTWARE.
% By using this software, you are agreeing to the terms detailed in this software's
% Matlab source file.

% BEGIN TERMS OF USE LICENSE
%
% This SOFTWARE is maintained by the CREWES Project at the Department
% of Geology and Geophysics of the University of Calgary, Calgary,
% Alberta, Canada.  The copyright and ownership is jointly held by
% its 'AUTHOR' (identified above) and the CREWES Project.  The CREWES
% project may be contacted via email at:  crewesinfo@crewes.org
%
% The term 'SOFTWARE' refers to the Matlab source code, translations to
% any other computer language, or object code
%
% Terms of use of this SOFTWARE
%
% 1) This SOFTWARE may be used by any individual or corporation for any purpose
%    with the exception of re-selling or re-distributing the SOFTWARE.
%
% 2) The AUTHOR and CREWES must be acknowledged in any resulting publications or
%    presentations
%
% 3) This SOFTWARE is provided "as is" with no warranty of any kind
%    either expressed or implied. CREWES makes no warranties or representation
%    as to its accuracy, completeness, or fitness for any purpose. CREWES
%    is under no obligation to provide support of any kind for this SOFTWARE.
%
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% 5) Use this SOFTWARE at your own risk.
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% END TERMS OF USE LICENSE
  i = 1;
  n = 1;
  lmin(n) = 1;
  lmax(n) = 1;
  imax=length(line);
while (n < 100 )
  while( line(i,:) == line(i+1,:) ) %while no change in line name
    i=i+1;
    lmax(n) = i;
    if (i+1) > imax  %end of file
      return
    end
  end
  i = i+1;
  n = n+1;
  lmin(n)=lmax(n-1)+1;
end
disp('you have more than 100 lines');